Shimano Dura Ace Chainset

These models still use HollowTech crank arms to give an extreme rigid yet lightweight construction. Combined with a variety of other technology, depending on the model, to improve performance. Top models include: Innovative Octalink system uses an 8-splined interface between chainset and bottom bracket spindle to increase rigidity. Highly polished Dura-Ace finish to cranks arms and nickel plated chainrings. Aluminium SG-X chainrings for superior shifting performance even under great loads.